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 #include &lt;QtGui&gt;

 #include &quot;mysortfilterproxymodel.h&quot;
 #include &quot;window.h&quot;

 Window::Window()
 {
     proxyModel = new MySortFilterProxyModel(this);
     proxyModel-&gt;setDynamicSortFilter(true);

     sourceView = new QTreeView;
     sourceView-&gt;setRootIsDecorated(false);
     sourceView-&gt;setAlternatingRowColors(true);

     QHBoxLayout *sourceLayout = new QHBoxLayout;
     sourceLayout-&gt;addWidget(sourceView);
     sourceGroupBox = new QGroupBox(tr(&quot;Original Model&quot;));
     sourceGroupBox-&gt;setLayout(sourceLayout);

     filterCaseSensitivityCheckBox = new QCheckBox(tr(&quot;Case sensitive filter&quot;));
     filterCaseSensitivityCheckBox-&gt;setChecked(true);

     filterPatternLineEdit = new QLineEdit;
     filterPatternLineEdit-&gt;setText(&quot;Grace|Sports&quot;);

     filterPatternLabel = new QLabel(tr(&quot;&amp;Filter pattern:&quot;));
     filterPatternLabel-&gt;setBuddy(filterPatternLineEdit);

     filterSyntaxComboBox = new QComboBox;
     filterSyntaxComboBox-&gt;addItem(tr(&quot;Regular expression&quot;), QRegExp::RegExp);
     filterSyntaxComboBox-&gt;addItem(tr(&quot;Wildcard&quot;), QRegExp::Wildcard);
     filterSyntaxComboBox-&gt;addItem(tr(&quot;Fixed string&quot;), QRegExp::FixedString);

     fromDateEdit = new QDateEdit;
     fromDateEdit-&gt;setDate(QDate(1970, 01, 01));
     fromLabel = new QLabel(tr(&quot;F&amp;rom:&quot;));
     fromLabel-&gt;setBuddy(fromDateEdit);

     toDateEdit = new QDateEdit;
     toDateEdit-&gt;setDate(QDate(2099, 12, 31));
     toLabel = new QLabel(tr(&quot;&amp;To:&quot;));
     toLabel-&gt;setBuddy(toDateEdit);

     connect(filterPatternLineEdit, SIGNAL(textChanged(const QString &amp;)),
             this, SLOT(textFilterChanged()));
     connect(filterSyntaxComboBox, SIGNAL(currentIndexChanged(int)),
             this, SLOT(textFilterChanged()));
     connect(filterCaseSensitivityCheckBox, SIGNAL(toggled(bool)),
             this, SLOT(textFilterChanged()));
     connect(fromDateEdit, SIGNAL(dateChanged(const QDate &amp;)),
             this, SLOT(dateFilterChanged()));
     connect(toDateEdit, SIGNAL(dateChanged(const QDate &amp;)),
             this, SLOT(dateFilterChanged()));

     proxyView = new QTreeView;
     proxyView-&gt;setRootIsDecorated(false);
     proxyView-&gt;setAlternatingRowColors(true);
     proxyView-&gt;setModel(proxyModel);
     proxyView-&gt;setSortingEnabled(true);
     proxyView-&gt;sortByColumn(1, Qt::AscendingOrder);

     QGridLayout *proxyLayout = new QGridLayout;
     proxyLayout-&gt;addWidget(proxyView, 0, 0, 1, 3);
     proxyLayout-&gt;addWidget(filterPatternLabel, 1, 0);
     proxyLayout-&gt;addWidget(filterPatternLineEdit, 1, 1);
     proxyLayout-&gt;addWidget(filterSyntaxComboBox, 1, 2);
     proxyLayout-&gt;addWidget(filterCaseSensitivityCheckBox, 2, 0, 1, 3);
     proxyLayout-&gt;addWidget(fromLabel, 3, 0);
     proxyLayout-&gt;addWidget(fromDateEdit, 3, 1, 1, 2);
     proxyLayout-&gt;addWidget(toLabel, 4, 0);
     proxyLayout-&gt;addWidget(toDateEdit, 4, 1, 1, 2);

     proxyGroupBox = new QGroupBox(tr(&quot;Sorted/Filtered Model&quot;));
     proxyGroupBox-&gt;setLayout(proxyLayout);

     QVBoxLayout *mainLayout = new QVBoxLayout;
     mainLayout-&gt;addWidget(sourceGroupBox);
     mainLayout-&gt;addWidget(proxyGroupBox);
     setLayout(mainLayout);

     setWindowTitle(tr(&quot;Custom Sort/Filter Model&quot;));
     resize(500, 450);
 }

 void Window::setSourceModel(QAbstractItemModel *model)
 {
     proxyModel-&gt;setSourceModel(model);
     sourceView-&gt;setModel(model);
 }

 void Window::textFilterChanged()
 {
     QRegExp::PatternSyntax syntax =
             QRegExp::PatternSyntax(filterSyntaxComboBox-&gt;itemData(
                     filterSyntaxComboBox-&gt;currentIndex()).toInt());
     Qt::CaseSensitivity caseSensitivity =
             filterCaseSensitivityCheckBox-&gt;isChecked() ? Qt::CaseSensitive
                                                        : Qt::CaseInsensitive;

     QRegExp regExp(filterPatternLineEdit-&gt;text(), caseSensitivity, syntax);
     proxyModel-&gt;setFilterRegExp(regExp);
 }

 void Window::dateFilterChanged()
 {
     proxyModel-&gt;setFilterMinimumDate(fromDateEdit-&gt;date());
     proxyModel-&gt;setFilterMaximumDate(toDateEdit-&gt;date());
 }</pre>
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